KR20190133627A - Compound, coating composition comprising compound and electroluminescence device comprising the same - Google Patents

Abstract

The present specification relates to a compound, a coating composition comprising the same, and an organic light emitting device. The compound according to an embodiment of the present specification can be used as a material of an organic material layer of the organic light emitting device, thereby being able to lower a driving voltage of the organic light emitting device, improving light efficiency thereof, and improving lifetime characteristics of a device.

Description

Compound, coating composition and organic light emitting device comprising the same {COMPOUND, COATING COMPOSITION COMPRISING COMPOUND AND ELECTROLUMINESCENCE DEVICE COMPRISING THE SAME}

The present specification relates to a compound, a coating composition comprising the same, and an organic light emitting device.

This application claims the benefit of the filing date of Korean Patent Application No. 10-2018-0058326 filed with the Korea Intellectual Property Office on May 23, 2018, the entire contents of which are incorporated herein.

The organic light emitting phenomenon is an example of converting an electric current into visible light by an internal process of a specific organic molecule. The principle of the organic light emitting phenomenon is as follows. When the organic material layer is positioned between the anode and the cathode, when a current is applied between the two electrodes, electrons and holes are injected into the organic material layer from the cathode and the anode, respectively. Electrons and holes injected into the organic material layer recombine to form excitons, and the excitons fall back to the ground to shine. An organic light emitting device using this principle may generally be composed of an organic material layer including a cathode, an anode, and an organic material layer disposed therebetween, such as a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer.

Most of the materials used in the organic light emitting device are pure organic materials or complex compounds in which organic materials and metals are complexed, and according to the purpose, hole injection materials, hole transport materials, light emitting materials, electron transport materials, electron injection materials, etc. It can be divided into. Here, as the hole injection material or the hole transport material, an organic material having a p-type property, that is, an organic material which is easily oxidized and has an electrochemically stable state during oxidation, is mainly used. On the other hand, as the electron injecting material or the electron transporting material, an organic material having an n-type property, that is, an organic material which is easily reduced and has an electrochemically stable state during reduction is mainly used. As the light emitting material, a material having a p-type property and an n-type property at the same time, that is, a material having a stable form in both oxidation and reduction states is preferable. desirable.

In addition to the above, it is preferable that the material used in the organic light emitting device additionally have the following properties.

First, the material used in the organic light emitting device is preferably excellent in thermal stability. This is because joule heat is generated by the movement of charges in the organic light emitting device. NPB (n-propyl bromide), which is mainly used as a hole transporting material, has a glass transition temperature of less than or equal to 100 ° C., which makes it difficult to use an organic light emitting device that requires a high current.

Second, in order to obtain a high-efficiency organic light emitting device capable of low voltage driving, holes or electrons injected into the organic light emitting device should be smoothly transferred to the light emitting layer, and the injected holes and electrons should not escape out of the light emitting layer. For this purpose, the material used for the organic light emitting device should have an appropriate band gap and HOMO or LUMO energy level. In the case of PEDOT: PSS (Poly (3,4-ethylenediocythiophene) doped with poly (styrenesulfonic acid)), which is currently used as a hole transporting material in organic light emitting devices manufactured by solution coating, LUMO energy of organic materials used as light emitting layer materials Since the LUMO energy level is lower than the level, it is difficult to manufacture an organic light emitting device having high efficiency and long life.

In addition, the material used for the organic light emitting device should be excellent in chemical stability, charge mobility, interfacial characteristics with the electrode or the adjacent layer. That is, the material used for the organic light emitting device should be less deformation of the material by moisture or oxygen. In addition, by having an appropriate hole or electron mobility it should be able to maximize the exciton formation by balancing the density of holes and electrons in the light emitting layer of the organic light emitting device. In addition, for the stability of the device should be able to improve the interface with the electrode containing a metal or metal oxide.

Therefore, there is a demand in the art for the development of organic materials having the above requirements.

Korean Unexamined Patent Publication No. 10-2012-0112277

The present specification relates to a compound, a coating composition comprising the same, and an organic light emitting device.

The present specification provides a compound represented by the following Formula 1.

[Formula 1]

In Chemical Formula 1,

Ar1 and Ar2 are the same as or different from each other, and each independently represent a substituted or unsubstituted aryl group,

R1 to R4 are the same as or different from each other, and each independently hydrogen; heavy hydrogen; Halogen group; Nitrile group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted aryl group; Or a substituted or unsubstituted heterocyclic group,

r1 to r3 are each 1 to 3,

r4 is 1 to 4,

When r1 to r4 are each 2 or more, two or more R1 to R4 are the same as or different from each other,

; 또는

이며,X3 is

; or

Is,

;

; 또는

이며,X1 and X2 are the same as or different from each other, and each independently

;

; or

Is,

는 각각 연결되는 부위를 의미하며,

Means each connecting portion,

L 4 is a substituted or unsubstituted alkylene group,

L5 is a direct bond; Or a substituted or unsubstituted arylene group,

R5 and R6 are the same as or different from each other, and each independently a substituted or unsubstituted alkyl group,

a1 and a2 are each 0 or 1

when a2 is 0, L2 is a substituted or unsubstituted aryl group,

when a2 is 1, L2 is a direct bond; Or a substituted or unsubstituted arylene group,

L 1 is a substituted or unsubstituted arylene group; Or a substituted or unsubstituted heteroarylene group,

m is 1 or 2, when m is 2, L1 is the same as or different from each other,

L3 is a direct bond; Or a substituted or unsubstituted alkylene group

0 ≦ a1 + a2 ≦ 2.

In addition, the present disclosure provides a coating composition comprising the compound.

In addition, the present specification is a first electrode; A second electrode provided to face the first electrode; And at least one organic material layer provided between the first electrode and the second electrode, wherein at least one of the organic material layers includes the coating composition and a cured product thereof. do.

The organic material layer formed using the compound according to the exemplary embodiment of the present specification is excellent in thermal and optical stability after curing through heat and light and does not have solubility in other solvents, and thus, a layer forming process through another solution process on the film forming. Can be performed.

In addition, the compound according to the exemplary embodiment of the present specification may be used as a material of the organic material layer of the organic light emitting diode, thereby lowering the driving voltage of the organic light emitting diode.

In addition, the compound according to the exemplary embodiment of the present specification is used as a material of the organic material layer of the organic light emitting device, it is possible to improve the light efficiency.

In addition, the compound according to one embodiment of the present specification is used as a material of the organic material layer of the organic light emitting device, it is possible to improve the life characteristics of the device.

In addition, the compound according to an exemplary embodiment of the present specification is capable of curing at a low temperature, which is advantageous for mass production of an organic light emitting device, and because of high solubility, a solution process is possible, thereby allowing a large area in an organic light emitting device.

1 is a diagram illustrating an example of an organic light emitting device according to an exemplary embodiment of the present specification.

Hereinafter, this specification is demonstrated in detail.

The present specification provides a compound represented by Chemical Formula 1.

The compound of the present specification is effective in mass production by increasing the mobility of the curing machine to cause curing at a relatively low temperature. In addition, since there is an alkylene group between the hardener and the fluorene group, solubility is increased, and thus a wide range of solvents are selected in preparing the ink in the solution process. The thin film prepared by heat or light treatment of the coating composition of the compound and the curing initiator and the p-doped material of the amine group of the present invention provides an organic light emitting device having excellent solvent resistance, excellent current efficiency and device characteristics.

Examples of substituents herein are described below, but are not limited thereto.

는 연결되는 부위를 의미한다.In the present specification,

Means a site to be connected.

The term "substituted" means that a hydrogen atom bonded to a carbon atom of the compound is replaced with another substituent, and the position to be substituted is not limited to a position where the hydrogen atom is substituted, that is, a position where a substituent can be substituted, if two or more substituted , Two or more substituents may be the same or different from each other.

As used herein, the term "substituted or unsubstituted" is deuterium; Halogen group; Nitrile group; An alkyl group; Cycloalkyl group; Amine groups; Silyl groups; Phosphine oxide groups; Aryl group; And one or two or more substituents selected from the group consisting of heteroaryl groups including one or more of N, O, S, Se, and Si atoms, or two or more substituents among the substituents exemplified above are substituted with a substituent, or any It means that it does not have a substituent.

In the present specification, the alkyl group may be linear or branched, the carbon number is not particularly limited, but is preferably 1 to 50, more preferably 1 to 30. Specific examples include methyl, ethyl, propyl, n-propyl, isopropyl, butyl, n-butyl, isobutyl, tert-butyl, sec-butyl, 1-methyl-butyl, 1-ethyl-butyl, pentyl, n-pentyl , Isopentyl, neopentyl, tert-pentyl, hexyl, n-hexyl, 1-methylpentyl, 2-methylpentyl, 4-methyl-2-pentyl, 3,3-dimethylbutyl, 2-ethylbutyl, heptyl, n -Heptyl, 1-methylhexyl, cyclopentylmethyl, cyclohexylmethyl, octyl, n-octyl, tert-octyl, 1-methylheptyl, 2-ethylhexyl, 2-propylpentyl, n-nonyl, 2,2-dimethyl Heptyl, 1-ethyl-propyl, 1,1-dimethyl-propyl, isohexyl, 4-methylhexyl, 5-methylhexyl, and the like, but is not limited thereto.

In the present specification, the cycloalkyl group is not particularly limited, but preferably has 3 to 60 carbon atoms, more preferably 3 to 30 carbon atoms. Specifically, cyclopropyl, cyclobutyl, cyclopentyl, 3-methylcyclopentyl, 2,3-dimethylcyclopentyl, cyclohexyl, 3-methylcyclohexyl, 4-methylcyclohexyl, 2,3-dimethylcyclohexyl, 3 , 4,5-trimethylcyclohexyl, 4-tert-butylcyclohexyl, cycloheptyl, cyclooctyl, and the like, but is not limited thereto.

In the present specification, the alkenyl group may be linear or branched chain, the carbon number is not particularly limited, but is preferably 2 to 40, more preferably 2 to 20. Specifically, vinyl, 1-propenyl, isopropenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 3-methyl-1- Butenyl, 1,3-butadienyl, 1-phenylvinyl-1-yl, 2-phenylvinyl-1-yl, 2,2-diphenylvinyl-1-yl, 2-phenyl-2- (naphthyl -1-yl) vinyl-1-yl, 2,2-bis (diphenyl-1-yl) vinyl-1-yl, stilbenyl group, styrenyl group, and the like, but are not limited thereto.

In the present specification, specifically, the silyl group includes trimethylsilyl group, triethylsilyl group, t-butyldimethylsilyl group, vinyldimethylsilyl group, propyldimethylsilyl group, triphenylsilyl group, diphenylsilyl group, phenylsilyl group, and the like. However, the present invention is not limited thereto.

In the present specification, phosphine oxide groups include, but are not limited to, diphenylphosphine oxide group, dinaphthylphosphine oxide, and the like.

In the present specification, when the aryl group is a monocyclic aryl group, carbon number is not particularly limited, but is preferably 6 to 50 carbon atoms, more preferably 6 to 30 carbon atoms. Specifically, the monocyclic aryl group may be a phenyl group, a biphenyl group, a terphenyl group, a quarterphenyl group, etc., but is not limited thereto.

Carbon number is not particularly limited when the aryl group is a polycyclic aryl group. It is preferable that it is C10-C50, and 10-30 are more preferable. Specifically, the polycyclic aryl group may be a naphthyl group, anthracenyl group, phenanthryl group, pyrenyl group, peryllenyl group, triphenyl group, chrysenyl group, fluorenyl group and the like, but is not limited thereto.

In the present specification, the number of carbon atoms is not particularly limited, but is preferably 1 to 50, more preferably 10 to 30. The amine group may be substituted with the aforementioned alkyl group, aryl group, heterocyclic group, alkenyl group, cycloalkyl group, and combinations thereof. Specific examples of the amine group include methylamine group, dimethylamine group, ethylamine group, diethylamine Group, phenylamine group, naphthylamine group, biphenylamine group, anthracenylamine group, 9-methyl-anthracenylamine group, diphenylamine group, phenylnaphthylamine group, ditolylamine group, phenyltolylamine group And triphenylamine groups, but are not limited thereto.

In the present specification, examples of the arylamine group include a substituted or unsubstituted monoarylamine group, a substituted or unsubstituted diarylamine group, or a substituted or unsubstituted triarylamine group. The aryl group in the arylamine group may be a monocyclic aryl group, may be a polycyclic aryl group. The arylamine group including two or more aryl groups may simultaneously include a monocyclic aryl group, a polycyclic aryl group, or a monocyclic aryl group and a polycyclic aryl group. For example, the aryl group in the arylamine group may be selected from the examples of the aryl group described above. Specific examples of the arylamine group include phenylamine, naphthylamine, biphenylamine, anthracenylamine, 3-methyl-phenylamine, 4-methyl-naphthylamine, 2-methyl-biphenylamine, 9-methyl-anthra Cenylamine, diphenyl amine group, phenyl naphthyl amine group, ditolyl amine group, phenyl tolyl amine group, carbazole and triphenyl amine group and the like, but are not limited thereto.

In the present specification, the heterocyclic group includes one or more of N, O, S, Si, and Se as heteroatoms, and the carbon number is not particularly limited, but is preferably 2 to 60 carbon atoms, more preferably 2 to 30 carbon atoms. Do. Examples of the heterocyclic group include thiophene group, furan group, pyrrole group, imidazole group, thiazole group, oxazole group, oxadiazole group, triazole group, pyridine group, bipyridine group, pyrimidine group, triazine group, acridine group , Pyridazine group, pyrazine group, quinoline group, quinazoline group, quinoxaline group, phthalazine group (phthalazine), pteridine group (pteridine), pyrido pyrimidine, pyrido pyrazine group (pyrido pyrazine) ), Pyrazino pyrazine, isoquinoline, indole, pyrido indole, inno pyrimidine, carbazole, benzoxazole group, benzimidazole group, Benzothiazole group, benzocarbazole group, benzothiophene group, dibenzothiophene group, benzofuran group, dibenzofuran group, phenanthroline group, phenanthroline group, thiazolyl group, isoxazolyl group, oxadiazolyl group and thia Diazolyl group, etc., but is not limited to these.

In the present specification, the heteroaryl group may be selected from examples of the heterocyclic group except that the heteroaryl group is aromatic, but is not limited thereto.

In the present specification, the alkylene group refers to a divalent group having two bonding positions in the alkyl group. The description of the aforementioned alkyl groups can be applied except that they are each divalent.

In the present specification, the arylene group refers to a divalent group having two bonding positions in the aryl group. The description of the aforementioned aryl group can be applied except that they are each divalent.

In the present specification, the heteroarylene group means a divalent group having two bonding positions in the heteroaryl group. The description of the aforementioned heteroaryl group can be applied except that they are each divalent.

In one embodiment of the present specification, Ar1 and Ar2 are the same as or different from each other, and are each independently a substituted or unsubstituted aryl group.

In one embodiment of the present specification, Ar1 is a substituted or unsubstituted phenyl group; Substituted or unsubstituted biphenyl group; Or a substituted or unsubstituted naphthyl group.

In one embodiment of the present specification, Ar1 is a phenyl group unsubstituted or substituted with an alkyl group; A biphenyl group unsubstituted or substituted with an alkyl group; Or a naphthyl group unsubstituted or substituted with an alkyl group.

In one embodiment of the present specification, Ar1 is a phenyl group unsubstituted or substituted with an alkyl group; Or a biphenyl group unsubstituted or substituted with an alkyl group.

In one embodiment of the present specification, Ar1 is a methyl group or a phenyl group unsubstituted or substituted with a butyl group; Or a biphenyl group unsubstituted or substituted with a methyl group or a butyl group.

In one embodiment of the present specification, Ar2 is a substituted or unsubstituted phenyl group.

In one embodiment of the present specification, Ar2 is a phenyl group.

In one embodiment of the present specification, R1 to R4 are the same as or different from each other, and each independently hydrogen; heavy hydrogen; Halogen group; Nitrile group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted aryl group; Or a substituted or unsubstituted heteroring group.

In one embodiment of the present specification, R1 to R4 are the same as or different from each other, and each independently hydrogen; Or a substituted or unsubstituted aryl group.

In one embodiment of the present specification, R1 to R4 are the same as or different from each other, and each independently hydrogen; Or a substituted or unsubstituted phenyl group.

In one embodiment of the present specification, R1 to R4 are the same as or different from each other, and each independently hydrogen; Or a phenyl group unsubstituted or substituted with an alkyl group.

In one embodiment of the present specification, R1 to R4 are the same as or different from each other, and each independently hydrogen; Or a phenyl group unsubstituted or substituted with a butyl group.

In one embodiment of the present specification, R1 to R4 are the same as or different from each other, and each independently hydrogen; Or a phenyl group unsubstituted or substituted with a tert-butyl group.

In one embodiment of the present specification, R1 is hydrogen; Or a substituted or unsubstituted aryl group.

In one embodiment of the present specification, R1 is hydrogen; Or a substituted or unsubstituted phenyl group.

In one embodiment of the present specification, R1 is hydrogen; Or a phenyl group unsubstituted or substituted with an alkyl group.

In one embodiment of the present specification, R1 is hydrogen; Or a phenyl group unsubstituted or substituted with a butyl group.

In one embodiment of the present specification, R1 is hydrogen; Or a phenyl group unsubstituted or substituted with a tert-butyl group.

In one embodiment of the present specification, R2 to R4 are hydrogen.

In an exemplary embodiment of the present specification, r1 to r3 are each 1 to 3, r4 is 1 to 4, and when r1 to r4 are each 2 or more, two or more R1 to R4 are the same as or different from each other.

또는

이다.In one embodiment of the present specification, X3 is

or

to be.

;

; 또는

이다. In one embodiment of the present specification, X1 and X2 are the same as or different from each other, and each independently

;

; or

to be.

In one embodiment of the present specification, L4 is a substituted or unsubstituted alkylene group.

In one embodiment of the present specification, L4 is a substituted or unsubstituted alkylene group having 1 to 20 carbon atoms.

In one embodiment of the present specification, L4 is a substituted or unsubstituted C1-C10 alkylene group.

In one embodiment of the present specification, L4 is a substituted or unsubstituted alkylene group having 1 to 8 carbon atoms.

In one embodiment of the present specification, L4 is a substituted or unsubstituted linear or branched alkylene group having 1 to 20 carbon atoms.

In one embodiment of the present specification, L4 is a substituted or unsubstituted linear or branched alkylene group having 1 to 10 carbon atoms.

In one embodiment of the present specification, L4 is a substituted or unsubstituted linear or branched alkylene group having 1 to 8 carbon atoms.

In one embodiment of the present specification, L5 is a direct bond; Or a substituted or unsubstituted arylene group.

In one embodiment of the present specification, L5 is a direct bond; Substituted or unsubstituted phenylene group; Or a substituted or unsubstituted naphthylene group.

In one embodiment of the present specification, L5 is a direct bond; A phenylene group unsubstituted or substituted with an alkyl group; Or a naphthylene group unsubstituted or substituted with an alkyl group.

In one embodiment of the present specification, L5 is a direct bond; A phenylene group unsubstituted or substituted with an alkyl group having 1 to 3 carbon atoms; Or a naphthylene group unsubstituted or substituted with an alkyl group having 1 to 3 carbon atoms.

In one embodiment of the present specification, L5 is a direct bond; A phenylene group unsubstituted or substituted with a methyl group; Or a naphthylene group unsubstituted or substituted with a methyl group.

In one embodiment of the present specification, L5 is a direct bond; A phenylene group unsubstituted or substituted with a methyl group; Or a naphthylene group.

In one embodiment of the present specification, R5 and R6 are the same as or different from each other, and each independently an alkyl group having 1 to 20 carbon atoms.

In one embodiment of the present specification, R5 and R6 are the same as or different from each other, and are each independently an alkyl group having 1 to 10 carbon atoms.

In one embodiment of the present specification, R5 and R6 are the same as or different from each other, and each independently a linear or main chain alkyl group having 1 to 20 carbon atoms.

In one embodiment of the present specification, R5 and R6 are the same as or different from each other, and are each independently a linear or main chain alkyl group having 1 to 10 carbon atoms.

In one embodiment of the present specification, R5 and R6 are methyl groups.

In one embodiment of the present specification, a1 and a2 are each 0 or 1.

In an exemplary embodiment of the present specification, when the a2 is 0, L2 is a substituted or unsubstituted aryl group.

In an exemplary embodiment of the present specification, when the a2 is 0, L2 is a phenyl group.

In one embodiment of the present specification, when the a2 is 1, the L2 is a direct bond; Or a substituted or unsubstituted arylene group.

In one embodiment of the present specification, when the a2 is 1, the L2 is a direct bond; Or a substituted or unsubstituted phenylene group.

In one embodiment of the present specification, when the a2 is 1, the L2 is a direct bond; Or a phenylene group.

In one embodiment of the present specification, m is 1 or 2, when m is 2, L1 is the same as or different from each other, and L1 is a substituted or unsubstituted arylene group; Or a substituted or unsubstituted heteroarylene group.

In one embodiment of the present specification, L1 is a substituted or unsubstituted phenylene group; A substituted or unsubstituted divalent fluorene group; Or a substituted or unsubstituted divalent dibenzofuran group.

In one embodiment of the present specification, L1 is a phenylene group; Divalent fluorene group unsubstituted or substituted with an alkyl group; Or a divalent dibenzofuran group.

In one embodiment of the present specification, L1 is a phenylene group; Divalent fluorene group substituted with methyl group; Or a divalent dibenzofuran group.

In one embodiment of the present specification, L3 is a direct bond; Or an alkylene group.

In one embodiment of the present specification, L3 is a direct bond; Or an alkylene group having 1 to 20 carbon atoms.

In one embodiment of the present specification, L3 is a direct bond; Or an alkylene group having 1 to 10 carbon atoms.

In one embodiment of the present specification, L3 is a direct bond; Or an alkylene group having 1 to 5 carbon atoms.

In one embodiment of the present specification, L3 is a direct bond; Or a linear alkylene group having 1 to 5 carbon atoms.

In one embodiment of the present specification, L3 is a direct bond.

In one embodiment of the present specification, 0 ≦ al + a2 ≦ 2.

In one embodiment of the present specification, Chemical Formula 1 may be represented by the following Chemical Formula 2.

[Formula 2]

In Chemical Formula 2,

The definitions for L1 to L3, Ar1, Ar2, R1 to R4, r1 to r4, X1 to X3, m, a1 and a2 are the same as defined in Chemical Formula 1.

In one embodiment of the present specification, the compound represented by Formula 1 is any one selected from the following compounds.

Compounds according to one embodiment of the present specification may be prepared by the production method described below. In the following production examples, representative examples are described, but if necessary, a substituent may be added or excluded, and the position of the substituent may be changed. In addition, based on techniques known in the art, it is possible to change the starting materials, reactants, reaction conditions and the like.

Wherein X1 to X3, Ar1, Ar2, L1 to L3, R1 to R4, a1, a2, r1 to r3, and m are the same as defined in the formula (1).

The present specification provides a coating composition comprising the compound.

According to an exemplary embodiment of the present specification, the coating composition may further include a solvent.

In one embodiment of the present specification, the coating composition may be a liquid. The "liquid phase" means a liquid state at room temperature and normal pressure.

In one embodiment of the present specification, the solvent is, for example, a chlorine solvent such as chloroform, methylene chloride, 1,2-dichloroethane, 1,1,2-trichloroethane, chlorobenzene, o-dichlorobenzene; Ether solvents such as tetrahydrofuran and dioxane; Aromatic hydrocarbon solvents such as toluene, xylene, trimethylbenzene, and mesitylene; Aliphatic hydrocarbon solvents such as cyclohexane, methylcyclohexane, n-pentane, n-hexane, n-heptane, n-octane, n-nonane and n-decane; Ketone solvents such as acetone, methyl ethyl ketone and cyclohexanone; Ester solvents such as ethyl acetate, butyl acetate and ethyl cellosolve acetate; Polyhydric compounds such as ethylene glycol, ethylene glycol monobutyl ether, ethylene glycol monoethyl ether, ethylene glycol monomethyl ether, dimethoxyethane, propylene glycol, diethoxymethane, triethylene glycol monoethyl ether, glycerin and 1,2-hexanediol Alcohols and derivatives thereof; Alcohol solvents such as methanol, ethanol, propanol, isopropanol and cyclohexanol; Sulfoxide solvents such as dimethyl sulfoxide; and amide solvents such as N-methyl-2-pyrrolidone and N, N-dimethylformamide; Benzoate solvents such as methyl benzoate, butyl benzoate and 3-phenoxy benzoate; Although a solvent such as tetralin is exemplified, any solvent capable of dissolving or dispersing the compound according to one embodiment of the present specification is possible, but is not limited thereto.

In another exemplary embodiment, the solvent may be used alone or in combination of two or more solvents.

In another exemplary embodiment, the boiling point of the solvent is preferably 40 ° C. to 250 ° C., more preferably 60 ° C. to 230 ° C., but is not limited thereto.

In another exemplary embodiment, the viscosity of the single or mixed solvent is preferably 1 CP to 10 CP, more preferably 3 CP to 8 CP, but is not limited thereto.

In another exemplary embodiment, the concentration of the coating composition is preferably 0.1 wt / v% to 20 wt / v%, more preferably 0.5 wt / v% to 5 wt / v%, but is not limited thereto. .

In one embodiment of the present specification, the coating composition may further include one or two or more additives selected from the group consisting of a thermal polymerization initiator and a photopolymerization initiator.

The thermal polymerization initiator is methyl ethyl ketone peroxide, methyl isobutyl ketone peroxide, acetylacetone peroxide, methylcyclohexanone peroxide, cyclohexanone peroxide, isobutyryl peroxide, 2,4-dichlorobenzoyl peroxide , Bis-3,5,5-trimethyl hexanoyl peroxide, lauryl peroxide, benzoyl peroxide, p-chloro benzoyl peroxide, dicumylperoxide, 2,5-dimethyl-2,5- (t-butyl Oxy) -hexane, 1,3-bis (t-butyl peroxy-isopropyl) benzene, t-butyl cumyl peroxide, di-tbutyl peroxide, 2,5-dimethyl-2,5- ( Dit-butyl peroxy) hexane-3, tris- (t-butyl peroxy) triazine, 1,1-dit-butyl peroxy-3,3,5-trimethyl cyclohexane, 1,1-dit -Butyl peroxy cyclohexane, 2,2-di (t-butyl peroxy) butane, 4,4-di-t-butchipachybariclic acid n-butyl ester, 2,2-bis (4, 4-t-butyl peroxy cyclo C) propane, t-butylperoxyisobutylate, dit-butyl peroxy hexahydro terephthalate, t-butyl peroxy-3,5,5-trimethylhexaate, t-butylperoxybenzoate, dit Peroxides, such as -butyl peroxy trimethyl adipate, or an azo system, such as azobis isobutyl nitrile, azobisdimethylvaleronitrile, azobis cyclohexyl nitrile, but it is not limited to this.

The photoinitiator is diethoxy acetophenone, 2,2-dimethoxy-1,2-diphenyl ethane-1-one, 1-hydroxy-cyclohexyl-phenyl-ketone, 4- (2-hydroxyethoxy) Phenyl- (2-hydroxy-2-propyl) ketone, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) butanone-1,2-hydroxy-2-methyl-1-phenyl Propane-1-one, 2-methyl-2-morpholino (4-methyl thiophenyl) propane-1-one, 1-phenyl-1,2-propanedione-2- (o-ethoxycarbonyl) oxime Benzoin ethers such as acetophenone-based or ketal-based photopolymerization initiators, benzoin, benzoin methyl ether, benzoin ether ether, benzoin isobutyl ether, benzoin isopropyl ether, etc. Benzophenone type photoinitiators, such as a photoinitiator, benzophenone, 4-hydroxy benzophenone, 2-benzoyl naphthalene, 4-benzoyl biphenyl, 4- benzoyl phenyl ether, acrylated benzophenone, 1, 4- benzoyl benzene, 2 Isopropyl thioxanthone, 2-chlorothioxanthone, 2,4 -Thioxanthone type photoinitiators such as -dimethyl thioxanthone, 2,4-diethyl thioxanthone and 2,4-dichlorothioxanthone, and other photopolymerization initiators include ethyl anthraquinone and 2,4,6-trimethyl. Benzoyl diphenyl phosphine oxide, 2,4,6-trimethylbenzoyl phenyl ethoxy phosphine oxide, bis (2,4,6-trimethylbenzoyl) phenyl phosphine oxide, bis (2,4-dimethoxy benzoyl) -2 , 4,4-trimethyl pentylphosphine oxide, methyphenyrrigniochisteel, 9,10-phenanthrene, acridine-based compound, triazine-based compound, imidazole-based compound, but is not limited thereto .

Moreover, what has a photopolymerization promoting effect can also be used individually or in combination with the said photoinitiator. Examples include triethanolamine, methyl diethanol amine, 4-dimethylamino benzoate, 4-dimethylamino benzoate isoamyl, benzoic acid (2-dimethylamino) ethyl, 4,4'-dimethylaminobenzophenone, and the like. It is not limited.

The present specification also provides an organic light emitting device formed using the coating composition.

In one embodiment of the present specification, the first electrode; A second electrode provided to face the first electrode; And at least one organic material layer provided between the first electrode and the second electrode, wherein at least one of the organic material layers is formed using a coating composition or a cured product thereof including the compound.

In one embodiment of the present specification, the first electrode is a cathode, and the second electrode is an anode.

In another embodiment, the first electrode is an anode, and the second electrode is a cathode.

In one embodiment of the present specification, the organic material layer formed using the coating composition is a hole transport layer, a hole injection layer or a layer for simultaneously transporting holes and hole injection.

In one embodiment of the present specification, the organic material layer including the coating composition or a cured product thereof is a light emitting layer.

In one embodiment of the present specification, the coating composition is an anion group represented by the formula (11); And it may further comprise an ionic compound comprising a cationic group represented by the formula (12).

[Formula 11]

In Chemical Formula 11,

At least one of R101 to R120 is F; Cyano group; Or a substituted or unsubstituted fluoroalkyl group,

At least one of the remaining R101 to R120 is a curing machine,

The remaining R101 to R120 are the same as or different from each other, and each independently hydrogen; heavy hydrogen; Nitro group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted alkenyl group; Substituted or unsubstituted amine group; Substituted or unsubstituted aryl group; Or a substituted or unsubstituted heterocyclic group,

[Formula 12]

In Chemical Formula 12,

R121 to R130 are the same as or different from each other, and each independently hydrogen; heavy hydrogen; Nitro group; Halogen group; Substituted or unsubstituted alkyl group; A substituted or unsubstituted cycloalkyl group; Substituted or unsubstituted alkenyl group; Substituted or unsubstituted aryl group; Or a substituted or unsubstituted heteroring group, or a curing group.

As used herein, "curing group" may refer to a reactive substituent that crosslinks between compounds by exposure to heat and / or light. The crosslinking may be generated while the radicals generated as the carbon-carbon multiple bond and the cyclic structure are decomposed by heat treatment or light irradiation are connected.

In one embodiment of the present specification, at least one of the R103, R108, R113 and R118 is a curing machine.

In one embodiment of the present specification, the curing machine is any one selected from the following structures.

In the above structure,

L11 is a direct bond; -O-; -S-; Substituted or unsubstituted alkylene group; Substituted or unsubstituted arylene group; Or a substituted or unsubstituted heteroarylene group,

k is 1 or 2,

When k is 2, L11 is the same as or different from each other,

R131 is a substituted or unsubstituted alkyl group.

In one embodiment of the present specification, the curing group of Formula 11 is a vinyl group.

In one embodiment of the present specification, R103, R108, R113 and R118 of Formula 11 are the same as or different from each other, and are each independently a vinyl group or a F.

In one embodiment of the present specification, at least one of R103, R108, R113 and R118 of Formula 11 is a curing machine.

In one embodiment of the present specification, at least one of R103, R108, R113 and R118 of Formula 11 is a vinyl group.

In one embodiment of the present specification, at least one of R103, R108, R113 and R118 of Formula 11 is a vinyl group, the remainder is F.

In one embodiment of the present specification, the anionic group represented by Formula 11 is any one selected from the following structures.

In one embodiment of the present specification, the cationic group represented by Formula 12 is any one selected from the following structures.

In one embodiment of the present specification, the organic light emitting device is a hole injection layer, a hole transport layer. It may further include one or two or more layers selected from the group consisting of an electron transport layer, an electron injection layer, an electron injection and transport layer, an electron blocking layer and a hole blocking layer.

In another exemplary embodiment, the organic light emitting device may be an organic light emitting device having a structure in which an anode, at least one organic material layer, and a cathode are sequentially stacked on a substrate.

 In another exemplary embodiment, the organic light emitting device may be an organic light emitting device having an inverted type in which a cathode, one or more organic material layers, and an anode are sequentially stacked on a substrate.

The organic material layer of the organic light emitting device of the present specification may be formed of a single layer structure, but may be formed of a multilayer structure in which two or more organic material layers are stacked. For example, the organic light emitting device of the present specification may have a structure including a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer and the like as an organic material layer. However, the structure of the organic light emitting device is not limited thereto and may include a smaller number of organic layers.

For example, the structure of the organic light emitting device according to the exemplary embodiment of the present specification is illustrated in FIG. 1.

In FIG. 1, an anode 201, a hole injection layer 301, a hole transport layer 401, a light emitting layer 501, an electron injection and transport layer 601, and a cathode 701 are sequentially stacked on the substrate 101. The structure of the organic light emitting element is illustrated.

1 illustrates an organic light emitting diode and is not limited thereto.

When the organic light emitting device includes a plurality of organic material layers, the organic material layers may be formed of the same material or different materials.

The organic light emitting device of the present specification may be manufactured by materials and methods known in the art, except that at least one layer of the organic material layer is formed using a coating composition.

For example, the organic light emitting device of the present specification may be manufactured by sequentially stacking an anode, an organic material layer, and a cathode on a substrate. At this time, by using a physical vapor deposition (PVD) method such as sputtering or e-beam evaporation, a metal or conductive metal oxide or an alloy thereof is deposited on the substrate to form an anode. It may be prepared by forming an organic material layer including a hole injection layer, a hole transport layer, a light emitting layer, and an electron transport layer thereon, and then depositing a material that can be used as a cathode thereon. In addition to the above method, an organic light emitting device may be manufactured by sequentially depositing a cathode material, an organic material layer, and an anode material on a substrate.

The present specification also provides a method of manufacturing an organic light emitting device formed using the coating composition.

Specifically, in one embodiment of the present specification, preparing a substrate; Forming a cathode or anode on the substrate; Forming at least one organic layer on the cathode or anode; And forming an anode or a cathode on the organic material layer, wherein the forming the organic material layer comprises forming at least one organic material layer using the coating composition. do.

In one embodiment of the present specification, the organic material layer formed using the coating composition is formed using spin coating or ink jetting.

In another embodiment, the organic material layer formed using the coating composition is formed by a printing method.

In the state of the present specification, the printing method includes, for example, inkjet printing, nozzle printing, offset printing, transfer printing or screen printing, but is not limited thereto.

The coating composition according to an exemplary embodiment of the present specification has an economical effect in time and cost at the time of manufacturing the device because it can be formed by a printing method by the solution process is suitable as a structural characteristic.

In one embodiment of the present specification, the forming of the organic material layer formed using the coating composition comprises: coating the coating composition on the cathode or anode; And heat treating or light treating the coated coating composition.

In one embodiment of the present specification, the time for heat treatment of the organic material layer formed using the coating composition is preferably within 1 hour, more preferably within 30 minutes.

In one embodiment of the present specification, the atmosphere for heat-treating the organic material layer formed using the coating composition is preferably an inert gas such as argon, nitrogen.

When the heat treatment or the light treatment step is included in the step of forming the organic material layer formed using the coating composition, a plurality of fluorene groups included in the coating composition may form a crosslink to provide an organic material layer including a thinned structure. In this case, it may be prevented from being dissolved, morphologically affected or degraded by a solvent deposited on the surface of the organic material layer formed using the coating composition.

Therefore, when the organic layer formed by using the coating composition is formed by a heat treatment or a light treatment step, the resistance to the solvent may be increased to repeatedly form a solution deposition and crosslinking method to form a multilayer, and the stability may be increased. It can increase the life characteristics.

In one embodiment of the present specification, the coating composition containing the compound may be used as a coating composition mixed and dispersed in a polymer binder.

In one embodiment of the present specification, the polymer binder is preferably one which does not inhibit charge transport extremely, and preferably one which does not have strong absorption of visible light. Examples of the polymer binder include poly (N-vinylcarbazole), polyaniline and derivatives thereof, polythiophene and derivatives thereof, poly (p-phenylenevinylene) and derivatives thereof, poly (2,5-thienylenevinylene) and Derivatives thereof, polycarbonates, polyacrylates, polymethylacrylates, polymethylmethacrylates, polystyrenes, polyvinyl chlorides, polysiloxanes and the like.

In addition, the compound according to the exemplary embodiment of the present specification may be included alone in the organic layer, or may be included as a copolymer using a coating composition mixed with other monomers. It is also possible to include copolymers or mixtures using coating compositions mixed with other polymers.

As the anode material, a material having a large work function is generally preferred to facilitate hole injection into the organic material layer. Specific examples of anode materials that can be used herein include metals such as vanadium, chromium, copper, zinc, gold or alloys thereof; Metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO), indium zinc oxide (IZO); ZnO: Al or SnO ₂ : Combination of metals and oxides such as Sb; Conductive polymers such as poly (3-methylthiophene), poly [3,4- (ethylene-1,2-dioxy) thiophene] (PEDOT), polypyrrole and polyaniline, and the like, but are not limited thereto.

The cathode material is generally a material having a small work function to facilitate electron injection into the organic material layer. Specific examples of the cathode materials include metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin and lead or alloys thereof; Multilayer structure materials such as LiF / Al or LiO ₂ / Al, and the like, but are not limited thereto.

The hole injection layer is a layer for injecting holes from the electrode, and has a capability of transporting holes to the hole injection material, has an effect of hole injection at the anode, excellent hole injection effect to the light emitting layer or the light emitting material, and produced in the light emitting layer The compound which prevents the excitons from moving to the electron injection layer or the electron injection material, and is excellent in thin film formation ability is preferable. Preferably, the highest occupied molecular orbital (HOMO) of the hole injection material is between the work function of the anode material and the HOMO of the surrounding organic material layer. Specific examples of the hole injection material include metal porphyrin, oligothiophene, arylamine-based organic material, hexanitrile hexaazatriphenylene-based organic material, quinacridone-based organic material, and perylene-based Organic substances, anthraquinone and polyaniline and polythiophene-based conductive polymers, but are not limited thereto.

The hole transport layer is a layer that receives holes from the hole injection layer and transports holes to the light emitting layer. The hole transport material is a material capable of transporting holes from the anode or the hole injection layer to the light emitting layer. The material is suitable. Specific examples thereof include an arylamine-based organic material, a conductive polymer, and a block copolymer having a conjugated portion and a non-conjugated portion together, but are not limited thereto.

The light emitting material is a material capable of emitting light in the visible region by transporting and combining holes and electrons from the hole transport layer and the electron transport layer, respectively, and a material having good quantum efficiency with respect to fluorescence or phosphorescence is preferable. Specific examples thereof include 8-hydroxyquinoline aluminum complex (Alq ₃ ); Carbazole series compounds; Dimerized styryl compounds; BAlq; 10-hydroxybenzoquinoline-metal compound; Benzoxazole, benzthiazole and benzimidazole series compounds; Poly (p-phenylenevinylene) (PPV) -based polymers; Spiro compounds; Polyfluorene; Or rubrene, and the like, but is not limited thereto.

The light emitting layer may include a host material and a dopant material. The host material is a condensed aromatic ring derivative or a heterocyclic containing compound. Specifically, the condensed aromatic ring derivatives include anthracene derivatives, pyrene derivatives, naphthalene derivatives, pentacene derivatives, phenanthrene compounds, and fluoranthene compounds, and heterocyclic-containing compounds include carbazole derivatives, dibenzofuran derivatives, and ladder types. Furan compounds, pyrimidine derivatives, and the like, but are not limited thereto.

Dopant materials include aromatic amine derivatives, styrylamine compounds, boron complexes, fluoranthene compounds, metal complexes, and the like. Specifically, the aromatic amine derivative is a condensed aromatic ring derivative having a substituted or unsubstituted arylamine group, and includes pyrene, anthracene, chrysene and periplanthene having an arylamine group, and the styrylamine compound is substituted or unsubstituted. At least one arylvinyl group is substituted with the arylamine, and one or two or more substituents selected from the group consisting of an aryl group, a silyl group, an alkyl group, a cycloalkyl group and an arylamine group are substituted or unsubstituted. Specifically, styrylamine, styryldiamine, styryltriamine, styryltetraamine and the like, but is not limited thereto. In addition, the metal complex includes, but is not limited to, an iridium complex, a platinum complex, and the like.

The electron transport layer is a layer that receives electrons from the electron injection layer and transports electrons to the light emitting layer. As the electron transporting material, a material capable of injecting electrons well from the cathode and transferring them to the light emitting layer is suitable. Do. Specific examples thereof include Al complexes of 8-hydroxyquinoline; Complexes including Alq ₃ ; Organic radical compounds; Or hydroxyflavone-metal complexes, and the like, but is not limited thereto. The electron transport layer can be used with any desired cathode material as used in accordance with the prior art. In particular, examples of suitable cathode materials are conventional materials having a low work function followed by an aluminum or silver layer. Specifically cesium, barium, calcium, ytterbium and samarium, followed by aluminum layers or silver layers in each case.

The electron injection layer is a layer that injects electrons from an electrode, has an ability of transporting electrons, has an electron injection effect from a cathode, an electron injection effect with respect to a light emitting layer or a light emitting material, and hole injection of excitons generated in the light emitting layer. The compound which prevents the movement to a layer and is excellent in thin film formation ability is preferable. Specifically, fluorenone, anthraquinodimethane, diphenoquinone, thiopyran dioxide, oxazole, oxadiazole, triazole, imidazole, perylenetetracarboxylic acid, preorenylidene methane, anthrone and the derivatives thereof, metal Complex compounds, nitrogen-containing five-membered ring derivatives, and the like, but are not limited thereto.

Examples of the metal complex compound include 8-hydroxyquinolinato lithium, bis (8-hydroxyquinolinato) zinc, bis (8-hydroxyquinolinato) copper, bis (8-hydroxyquinolinato) manganese, Tris (8-hydroxyquinolinato) aluminum, tris (2-methyl-8-hydroxyquinolinato) aluminum, tris (8-hydroxyquinolinato) gallium, bis (10-hydroxybenzo [h] Quinolinato) beryllium, bis (10-hydroxybenzo [h] quinolinato) zinc, bis (2-methyl-8-quinolinato) chlorogallium, bis (2-methyl-8-quinolinato) ( o-cresolato) gallium, bis (2-methyl-8-quinolinato) (1-naphtolato) aluminum, bis (2-methyl-8-quinolinato) (2-naphtolato) gallium, It is not limited to this.

The hole blocking layer is a layer for preventing the cathode from reaching the hole, and may be generally formed under the same conditions as the hole injection layer. Specifically, there are oxadiazole derivatives, triazole derivatives, phenanthroline derivatives, aluminum complexes, and the like, but are not limited thereto.

The organic light emitting device according to the present specification may be a top emission type, a bottom emission type, or a double side emission type according to a material used.

In one embodiment of the present specification, the compound may be included in an organic solar cell or an organic transistor in addition to the organic light emitting device.

Hereinafter, the present invention will be described in detail with reference to Examples. However, the embodiments according to the present disclosure may be modified in various other forms, and the scope of the present specification is not interpreted to be limited to the embodiments described below. The embodiments of the present specification are provided to more fully describe the present specification to those skilled in the art.

<Production example>

Preparation Example 1 Preparation of Compound A

1) Preparation of Intermediate A-1

b 61.8 g (290 mmol, 1.5 eq) was dissolved in 385 ml (0.5 M) of tetrahydrofuran (THF) and lowered to -78 ° C. 116 ml (290 mol, 1.5 eq) of nBuLi (2.5 M in hexane) was slowly added and stirred at -78 ° C for 30 minutes. a 50 g (193 mmol, 1.0 eq) was added and stirred overnight. After stopping the reaction with 1N HCl (aq) and extracted the organic layer with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, the solvent was removed, and the residue was purified by column chromatography to obtain an intermediate compound A-1.

2) Preparation of Intermediate A-2

30 g (76.3 mmol, 1.0 eq) of A-1 was dissolved in 255 ml (0.3 M) of methylene chloride (MC) and lowered to 0 ° C. 18.3 ml (114.5 mmol, 1.5 eq) of Et ₃ SiH was added and 8.9 ml (305 mmol, 4.0 eq) of trifluoroacetic acid (TFA) was added slowly. Then the reaction was stopped with a saturated NaHCO ₃ aqueous solution and the organic layer was extracted with MC. The organic layer was dried over magnesium sulfate, the solvent was removed, and the residue was purified by column chromatography to obtain an intermediate compound A-2.

3) Preparation of Intermediate A-3

c 30 g (245 mmol, 1.0 eq) was dissolved in 490 ml (0.5 M) of acetone, and 67.7 g (490 mmol, 2.0 eq) of K ₂ CO ₃ was added and refluxed for 30 minutes. d 133 g (490 mmol, 2.0 eq) was added and refluxed overnight. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, the solvent was removed, and the residue was purified by column chromatography to obtain an intermediate compound A-3.

4) Preparation of Intermediate A-4

20 g (53 mmol, 1.0 eq) of A-2, 1.7 g (5.3 mmol, 0.1 eq) of tetrabutylammonium bromide (TBAB), and 176 ml (0.3 M) of toluene were added thereto and stirred at 60 ° C. 3.18 ml (159 mmol, 3.0 eq) of 50 wt% NaOH was added slowly. A-3 19.9g (63.6mmol, 1.2eq) was added and stirred overnight at 90 ° C. After stopping the reaction with a saturated NH ₄ Cl aqueous solution and extracted the organic layer with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, the solvent was removed, and the residue was purified by column chromatography to obtain an intermediate compound A-4.

5) Preparation of Intermediate A-5

CH ₃ PPh ₃ Br 38.6 g (108 mmol, 3.0 eq), KOtBu 12.1 g (108 mmol, 3.0 eq), tetrahydrofuran (THF) 180ml (0.2M) was added and stirred at 0 ° C. for 30 minutes. 20 g (36 mmol, 1.0 eq) of A-4 was added thereto, followed by stirring for 2 hours. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, and then the solvent was removed to purify the residue. The intermediate compound A-5 was obtained by column chromatography.

6) Preparation of Intermediate A-6

e 30 g (74.8 mmol, 1.0 eq) and f 13.3 g (89.8 mmol, 1.2 eq) were dissolved in 250 ml (0.3 M) of tetrahydrofuran (THF). 20.7 g (150 mmol, 2.0 eq) of K ₂ CO ₃ and 25 ml of H ₂ O were added and refluxed. 4.32 g (3.74 mmol, 0.05 eq) of Pd (PPh ₃ ) ₄ was slowly added and refluxed overnight. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, the solvent was removed, and the residue was purified by column chromatography to obtain an intermediate compound A-6.

7) Preparation of Intermediate A-7

30 g (70.7 mmol, 1.0 eq) and 25 g (84.8 mmol, 1.2 eq) of A-6 were dissolved in 235 ml (0.3 M) of THF. 19.5 g (141 mmol, 2.0 eq) of K ₂ CO ₃ and 25 ml of H ₂ O were added and refluxed. 4.09 g (3.54 mmol, 0.05 eq) of Pd (PPh ₃ ) ₄ was slowly added and refluxed overnight. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, and then the solvent was removed to purify the residue. The intermediate compound A-7 was obtained by column chromatography.

8) Preparation of Compound A

A-7 10g (19.5mmol, 1.0eq), A-5 14.2g (23.4mmol, 1.2eq), NaOtBu 5.6g (58.5mmol, 3.0eq) and toluene 65ml (0.3M) were added and stirred at 80 ° C. 0.30 g (0.585 mmol, 0.03 eq) of Pd (PtBu ₃ ) ₂ was added thereto, followed by stirring at 80 ° C. for 4 hours. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, and the solvent was removed to purify the residue. Thus, a white solid compound A was obtained by column chromatography. NMR data values of Compound A are as follows.

1 H NMR (500 MHz): δ = δ = 8.4-8.2 (d, 1H), 8.2-8.1 (d, 1H), 8.0-7.7 (m, 6H), 7.7-7.5 (m, 14H), 7.4-7.1 (m, 9H), 7.1-6.9 (m, 8H), 6.8-6.5 (m, 2H), 5.8-5.6 (d, 2H), 5.3-5.2 (d, 2H), 4.1-3.6 (q, 2H) , 2.3-2.2 (d, 2H), 2.2-1.8 (m, 1H), 1.45-1.35 (m, 1H), 1.35-1.3 (s, 9H), 1.2-1.0 (m, 4H), 1.0-0.5 ( d, 6H)

Preparation Example 2 Preparation of Compound B

1) Preparation of Intermediate B-1

h 45.5 g (290 mmol, 1.5 eq) was dissolved in 385 ml (0.5 M) of tetrahydrofuran (THF) and lowered to -78 ° C. 116 ml (290 mol, 1.5 eq) of nBuLi (2.5 M in hexane) was slowly added and stirred at -78 ° C for 30 minutes. a 50 g (193 mmol, 1.0 eq) was added and stirred overnight. After stopping the reaction with 1N HCl (aq) and extracted the organic layer with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, and then the solvent was removed to purify the residue. The intermediate compound B-1 was obtained by column chromatography.

2) Preparation of Intermediate B-2

30 g (89 mmol, 1.0 eq) of B-1 was dissolved in 295 ml (0.3 M) of methylene chloride (MC) and lowered to 0 ° C. 21.3 ml (133.4 mmol, 1.5 eq) of Et ₃ SiH was added and 10.6 ml (362 mmol, 4.0 eq) of TFA was added slowly. Then the reaction was stopped with a saturated NaHCO ₃ aqueous solution and the organic layer was extracted with MC. The organic layer was dried over magnesium sulfate, the solvent was removed, and the residue was purified by column chromatography to obtain an intermediate compound B-2.

3) Preparation of Intermediate B-3

c 30 g (245 mmol, 1.0 eq) was dissolved in 490 ml (0.5 M) of acetone, and 67.7 g (490 mmol, 2.0 eq) of K ₂ CO ₃ was added thereto and refluxed for 30 minutes. i 106 g (490 mmol, 2.0 eq) was added slowly and refluxed overnight. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, and then the solvent was removed to purify the mixture, which was then purified by column chromatography to obtain an intermediate compound B-3.

4) Preparation of Intermediate B-4

20 g (62 mmol, 1.0 eq) of B-2, 2 g (6.2 mmol, 0.1 eq) of TBAB, and 205 ml (0.3 M) of toluene were added thereto, followed by stirring at 60 ° C. 3.72ml (186mmol, 3.0eq) of 50wt% NaOH was added slowly. B-3 19.1 g (74.4 mmol, 1.2 eq) was added and the mixture was stirred at 90 ° C. overnight. After stopping the reaction with a saturated NH ₄ Cl aqueous solution and extracted the organic layer with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, the solvent was removed, and the residue was purified by column chromatography to obtain an intermediate compound B-4.

5) Preparation of Intermediate B-5

43 g of CH ₃ PPh ₃ Br (121 mmol, 3.0 eq), 13.6 g of KOtBu (121 mmol, 3.0 eq) and 200 ml of THF were added thereto, and the mixture was stirred at 0 ° C. for 30 minutes. B-4 20g (40mmol, 1.0eq) was added and stirred for 2 hours. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, and then the solvent was removed to purify the residue. The intermediate compound B-5 was obtained by column chromatography.

6) Preparation of Intermediate B-6

30 g (70.7 mmol, 1.0 eq) and j 31.5 g (84.8 mmol, 1.2 eq) of A-6 were dissolved in 235 ml (0.3 M) of tetrahydrofuran (THF). 19.5 g (141 mmol, 2.0 eq) of K ₂ CO ₃ and 25 ml of H ₂ O were added and refluxed. 4.09 g (3.54 mmol, 0.05 eq) of Pd (PPh ₃ ) ₄ was slowly added and refluxed overnight. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, and then the solvent was removed to purify the residue. The intermediate compound B-6 was obtained by column chromatography.

8) Preparation of Compound B

10 g (17 mmol, 1.0 eq) of B-6, 10.1 g (20.4 mmol, 1.2 eq) of B-5, 4.9 g (51 mmol, 3.0 eq) of NaOtBu, and 57 ml (0.3 M) of toluene were added and stirred at 80 ° C. 0.26 g (0.51 mmol, 0.03 eq) of Pd (PtBu ₃ ) ₂ was added thereto, followed by stirring at 80 ° C. for 4 hours. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, and then the solvent was removed to purify the residue. The white solid compound B was obtained by column chromatography. NMR data values of compound B are as follows.

1 H NMR (500 MHz): δ = 8.4-8.3 (d, 1H), 8.2-8.1 (d, 1H), 8.1-7.9 (d, 1H), 7.9-7.85 (m, 4H), 7.8-7.7 (m , 3H), 7.7-7.1 (m, 20H), 7.1-6.9 (m, 2H), 6.8-6.6 (d, 2H), 5.8-5.6 (d, 2H), 5.3-5.2 (d, 2H), 4.1 -4.0 (t, 2H), 2.3-2.1 (t, 2H), 1.8-1.6 (q, 2H), 1.3-1.1 (q, 2H)

Preparation Example 3 Preparation of Compound C

1) Preparation of Intermediate C-1

c 30 g (245 mmol, 1.0 eq) was dissolved in 490 ml (0.5 M) of acetone, and 67.7 g (490 mmol, 2.0 eq) of K ₂ CO ₃ was added thereto and refluxed for 30 minutes. k 119 g (490 mmol, 2.0 eq) was added slowly and refluxed overnight. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, and then the solvent was removed to purify the mixture, which was then purified by column chromatography to obtain intermediate compound C-1.

2) Preparation of Intermediate C-2

l 30g (173mmol, 1.0eq) was dissolved in 345ml (0.5M) of acetone, and 47.9g (347mmol, 2.0eq) of K ₂ CO ₃ was added and refluxed for 30 minutes. 99 g (347 mmol, 2.0 eq) of C-1 in the scheme was slowly added and refluxed overnight. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, the solvent was removed, and the residue was purified by column chromatography to obtain an intermediate compound C-2.

3) Preparation of Intermediate C-3

CH ₃ PPh ₃ Br 56.8g (159mmol, 3.0eq), KOtBu 17.8g (159mmol, 3.0eq), tetrahydrofuran (THF) 265ml (0.2M) was added and stirred at 0 ° C for 30 minutes. 20 g (53 mmol, 1.0 eq) of C-2 was added thereto, followed by stirring for 2 hours. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, the solvent was removed, and the residue was purified by column chromatography to obtain an intermediate compound C-3.

4) Preparation of Intermediate C-4

m 30 g (92.3 mmol, 1.0 eq) and n 19.7 g (110.7 mmol, 1.2 eq) were dissolved in 308 ml (0.3 M) of THF. 25.5 g (184.6 mmol, 2.0 eq) of K ₂ CO ₃ and 30 ml of H ₂ O were added and refluxed. 5.33 g (4.615 mmol, 0.05 eq) of Pd (PPh ₃ ) ₄ was slowly added and refluxed overnight. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, and then the solvent was removed to purify the residue. The intermediate compound C-4 was obtained by column chromatography.

5) Preparation of Intermediate C-5

10 g (26.4 mmol, 1.0 eq) of C-4, 11.9 g (31.7 mmol, 1.2 eq) of C-3, 7.6 g (79.2 mmol, 3.0 eq) of NaOtBu and 88 ml (0.3 M) of toluene were added thereto and stirred at 80 ° C. 0.405 g (0.792 mmol, 0.03 eq) of Pd (PtBu ₃ ) ₂ was added thereto, followed by stirring at 80 ° C. for 6 hours. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, the solvent was removed, and the residue was purified by column chromatography to obtain an intermediate compound C-5.

6) Preparation of Intermediate C-6

15 g (22.3 mmol, 1.0 eq) of C-5 and 9.93 g (26.8 mmol, 1.2 eq) of j were dissolved in 75 ml (0.3 M) of tetrahydrofuran (THF). 6.16 g (44.6 mmol, 2.0 eq) of K ₂ CO ₃ and 7.5 ml of H ₂ O were added and refluxed. 1.29 g (1.115 mmol, 0.05 eq) of Pd (PPh ₃ ) ₄ was slowly added and refluxed overnight. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, the solvent was removed, and the residue was purified by column chromatography to obtain an intermediate compound C-6.

7) Preparation of Compound C

10 g (11.9 mmol, 1.0 eq) of C-6, 7.1 g (14.3 mmol, 1.2 eq) of B-5, 3.43 g (35.7 mmol, 3.0 eq) of NaOtBu, and 40 ml (0.3 M) of toluene were added and stirred at 80 ° C. 0.30 g (0.595 mmol, 0.03 eq) of Pd (PtBu ₃ ) ₂ was added thereto, followed by stirring at 80 ° C. for 4 hours. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, and then the solvent was removed to purify the residue. Thus, a white solid compound C was obtained by column chromatography. NMR data values of compound C are as follows.

 1 H NMR (500 MHz): δ = 8.4-8.3 (d, 1H), 8.2-8.1 (d, 1H), 8.1-7.9 (d, 1H), 7.9-7.85 (m, 4H), 7.8-7.7 (m , 3H), 7.7-7.1 (m, 20H), 7.1-6.9 (m, 2H), 6.8-6.6 (d, 2H), 5.8-5.6 (d, 2H), 5.3-5.2 (d, 2H), 4.1 -4.0 (t, 2H), 2.3-2.1 (t, 2H), 1.8-1.6 (q, 2H), 1.3-1.1 (q, 2H)

Preparation Example 4 Preparation of Compound D

1) Preparation of Intermediate D-1

B-2 20g (62mmol, 1.0eq), TBAB 2g (6.2mmol, 0.1eq), toluene 205ml (0.3M) was added and stirred at 60 ℃. 3.72ml (186mmol, 3.0eq) of 50wt% NaOH was added slowly. 21.2 g (74.4 mmol, 1.2 eq) of C-1 was added thereto, and the mixture was stirred at 90 ° C. overnight. After stopping the reaction with a saturated NH ₄ Cl aqueous solution and extracted the organic layer with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, the solvent was removed, and the residue was purified by column chromatography to obtain an intermediate compound D-1.

2) Preparation of Intermediate D-2

CH ₃ PPh ₃ Br 40.8g (114.3mmol, 3.0eq), KOtBu 12.8g (114.3mmol, 3.0eq), tetrahydrofuran (THF) 570ml (0.2M) was added and stirred at 0 ° C for 30 minutes. D-1 20g (38.1 mmol, 1.0eq) was added and stirred for 2 hours. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, the solvent was removed, and the residue was purified by column chromatography to obtain an intermediate compound D-2.

3) Preparation of Intermediate D-3

20 g (41.7 mmol, 1.0 eq) and 13.6 g (91.7 mmol, 2.2 eq) of f were dissolved in 140 ml (0.3 M) of tetrahydrofuran (THF). 23 g (167 mmol, 4.0 eq) of K ₂ CO ₃ and 14 ml of H ₂ O were added and refluxed. 4.82 g (4.17 mmol, 0.1 eq) of Pd (PPh ₃ ) ₄ was slowly added and refluxed overnight. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, the solvent was removed, and the residue was purified by column chromatography to obtain an intermediate compound D-3.

4) Preparation of Intermediate D-4

15 g (28.5 mmol, 1.0 eq) and p 14.6 g (34.2 mmol, 1.2 eq) of D-3 were dissolved in 95 ml (0.3 M) of tetrahydrofuran (THF). 7.88 g (57 mmol, 2.0 eq) of K ₂ CO ₃ and 9.5 ml of H ₂ O were added and refluxed. 1.65 g (1.425 mmol, 0.05 eq) of Pd (PPh ₃ ) ₄ was slowly added and refluxed overnight. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, and then the solvent was removed to purify the mixture, which was then purified by column chromatography to obtain an intermediate compound D-4.

5) Preparation of Compound D

10 g (13.4 mmol, 1.0 eq) of D-4, 8.4 g (16.1 mmol, 1.2 eq) of D-2, 3.86 g (40.2 mmol, 3.0 eq) of NaOtBu, and 45 ml (0.3 M) of toluene were added and stirred at 80 ° C. 0.21 g (0.402 mmol, 0.03 eq) of Pd (PtBu ₃ ) ₂ was added thereto, followed by stirring at 80 ° C. for 4 hours. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, and the solvent was removed to purify the mixture. The resulting solid compound D was purified by column chromatography. NMR data values of compound D are as follows.

 1 H NMR (500 MHz): δ = 8.4-8.3 (d, 1H), 8.2-8.1 (d, 1H), 8.1-7.95 (d, 1H), 7.95-7.8 (m, 8H), 7.8-7.7 (d , 1H), 7.7-7.5 (m, 15H), 7.5-7.1 (m, 17H), 7.1-6.9 (m, 1H), 6.8-6.6 (d, 2H), 5.8-5.6 (d, 2H), 5.3 -5.2 (d, 2H), 4.1-4.0 (t, 2H), 2.3-2.1 (m, 2H), 1.8-1.6 (m, 2H), 1.5-1.4 (m, 2H), 1.4-1.3 (s, 9H), 1.3-1.2 (m, 2H)

Preparation Example 5 Preparation of Compound E

1) Preparation of Intermediate E-1

20 g (62 mmol, 1.0 eq) of B-2, 2 g (6.2 mmol, 0.1 eq) of tetrabutylammonium bromide (TBAB) and 205 ml (0.3 M) of toluene were added thereto, followed by stirring at 60 ° C. 3.72ml (186mmol, 3.0eq) of 50wt% NaOH was added slowly. 24.5 g (74.4 mmol, 1.2 eq) of q in the scheme was added and stirred at 90 ° C. overnight. After stopping the reaction with a saturated NH ₄ Cl aqueous solution and extracted the organic layer with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, the solvent was removed, and the residue was purified by column chromatography to obtain an intermediate compound E-1.

2) Preparation of Intermediate E-2

CH ₃ PPh ₃ Br 37.6g (105.3mmol, 3.0eq), KOtBu 11.8g (105.3mmol, 3.0eq), tetrahydrofuran (THF) 526ml (0.2M) was added and stirred for 30 minutes at 0 ℃. 20 g (35.1 mmol, 1.0 eq) of E-1 were added and stirred for 2 hours. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, and then the solvent was removed to purify the mixture, which was then purified by column chromatography to obtain an intermediate compound E-2.

3) Preparation of Compound E

10 g (13.4 mmol, 1.0 eq) of D-4, 9.1 g (16.1 mmol, 1.2 eq) of E-2, 3.86 g (40.2 mmol, 3.0 eq) of NaOtBu, and 45 ml (0.3 M) of toluene were added and stirred at 80 ° C. 0.21 g (0.402 mmol, 0.03 eq) of Pd (PtBu ₃ ) ₂ was added thereto, followed by stirring at 80 ° C. for 4 hours. After stopping the reaction by adding water, the organic layer was extracted with ethyl acetate [EA]. The organic layer was dried over magnesium sulfate, and the solvent was removed to purify the mixture. The resulting solid compound E was purified by column chromatography. NMR data values of compound E are as follows.

 1 H NMR (500 MHz): δ = 8.4-8.3 (d, 1H), 8.2-8.1 (d, 1H), 8.1-7.95 (d, 1H), 7.95-7.8 (m, 8H), 7.8-7.7 (d , 1H), 7.7-7.5 (m, 15H), 7.5-7.1 (m, 17H), 7.1-6.9 (m, 1H), 6.8-6.6 (d, 2H), 5.8-5.6 (d, 2H), 5.3 -5.2 (d, 2H), 4.1-4.0 (t, 2H), 2.3-2.1 (m, 2H), 1.4-1.3 (s, 9H), 1.3-1.0 (m, 4H), 0.8-0.3 (m, 2H), 0.3-0.1 (m, 6H)

EXAMPLES Fabrication of Organic Light-Emitting Device

Example 1.

A glass substrate on which ITO (indium tin oxide) was deposited at a thickness of 1500 Å was placed in distilled water in which detergent was dissolved and ultrasonically cleaned. After the ITO was washed for 30 minutes, the ultrasonic cleaning was repeated twice with distilled water for 10 minutes. After washing the distilled water, the ultrasonic washing with a solvent of isopropyl alcohol and acetone for 30 minutes each and dried, and then transported the substrate to the glove box.

The coating composition of Compound A (20 mg), Formula F (1 mg), and toluene (1 mg) was spin coated on the prepared ITO transparent electrode to form a hole injection layer having a thickness of 300 μs, and then used for 1 hour on a hot plate in air. The coating composition was cured. Thereafter, after transferring to a vacuum evaporator, the following a-NPD was vacuum deposited on the hole injection layer to form a hole transport layer.

After a-NPD was deposited to a thickness of 40 nm, the Alq ₃ was vacuum deposited to 50 nm on the hole transport layer to form a light emitting layer. The following BCP was vacuum deposited to a thickness of 35 nm on the emission layer to form an electron injection and transport layer. The cathode was formed by depositing LiF with a thickness of 0.5 nm and aluminum with a thickness of 100 nm on the electron injection and transport layer.

In the above process, the deposition rate of the organic material was maintained at 0.4 ~ 0.7 Å / sec, the LiF of the cathode was maintained at a deposition rate of 0.3 Å / sec, aluminum is 2 Å / sec, the vacuum degree during deposition is 2 × 10 ^-7 ˜3 × 10 ⁻⁵ torr was maintained.

[a-NPD]

[Alq ₃ ]

[BCP]

Formula F]

[Formula G]

[Formula H]

[Formula I]

[Formula J]

[Formula K]

Example 2.

An organic light-emitting device was manufactured in the same manner as in Example 1, except that Compound B was used instead of Compound A in Example 1.

Example 3.

An organic light-emitting device was manufactured in the same manner as in Example 1, except that Compound C was used instead of Compound A in Example 1.

Example 4.

An organic light-emitting device was manufactured in the same manner as in Example 1, except that Compound D was used instead of Compound A in Example 1.

Example 5.

An organic light-emitting device was manufactured in the same manner as in Example 1, except that Compound E was used instead of Compound A in Example 1.

Example 6.

An organic light emitting diode was manufactured according to the same method as Example 1 except for using Compound D instead of Compound A and Formula G instead of Formula F in Example 1.

Example 7.

An organic light-emitting device was manufactured in the same manner as in Example 1, except that Chemical Formula H was used instead of Chemical Formula F in Example 1.

Example 8.

An organic light-emitting device was manufactured in the same manner as in Example 7, except that Compound B was used instead of Compound A in Example 7.

Example 9.

An organic light-emitting device was manufactured in the same manner as in Example 8, except that Compound C was used instead of Compound A in Example 7.

Example 10.

An organic light emitting diode was manufactured according to the same method as Example 1 except for using Compound D instead of Compound A and Formula I instead of Formula F in Example 1.

Example 11.

An organic light-emitting device was manufactured in the same manner as in Example 1, except that Chemical Formula J was used instead of Chemical Formula F in Example 1.

Example 12.

An organic light-emitting device was manufactured in the same manner as in Example 11, except that Compound B was used instead of Compound A in Example 11.

Example 13.

An organic light-emitting device was manufactured in the same manner as in Example 11, except that Compound C was used instead of Compound A in Example 11.

Example 14.

An organic light emitting diode was manufactured according to the same method as Example 1 except for using Compound D instead of Compound A and Formula K instead of Formula F in Example 1.

Comparative Example 1.

An organic light-emitting device was manufactured in the same manner as in Example 1, except that Compound M was used instead of Compound A in Example 1.

[Compound M]

Comparative Example 2.

An organic light-emitting device was manufactured in the same manner as in Example 7, except that Compound N was used instead of Compound A in Example 7.

[Compound N]

Comparative Example 3.

An organic light-emitting device was manufactured in the same manner as in Example 7, except that Compound O was used instead of Compound A in Example 7.

[Compound O]

Comparative Example 4.

An organic light-emitting device was manufactured in the same manner as in Example 1, except that Compound P was used instead of Compound A in Example 1.

[Compound P]

The Examples 1 to 14 and Comparative Examples 1 and was measured for the driving voltage, current efficiency and quantum efficiency (QE) value of the organic light emitting device prepared in a current density of 10mA / cm ² 4, a current density of 10mA / cm ² The time (T90) to be 90% of the initial luminance at was measured. The results are shown in Table 1 below.

device Drive voltage (V) Current efficiency
(cd / A) QE (%) Life span T90
(10mA / cm ² ) Example 1 3.9 5.0 5.3 68.3 Example 2 3.9 5.1 5.4 72.5 Example 3 4.0 4.9 5.1 67.1 Example 4 3.9 4.8 5.3 69.5 Example 5 3.8 4.8 5.1 67.0 Example 6 3.8 4.9 5.3 69.0 Example 7 3.8 4.9 5.3 69.1 Example 8 3.8 5.2 5.5 72.7 Example 9 3.9 4.8 5.0 67.8 Example 10 3.8 5.0 5.4 70.4 Example 11 3.9 4.9 5.1 68.7 Example 12 3.8 5.2 5.5 71.8 Example 13 4.0 4.8 4.9 66.0 Example 14 3.9 4.8 5.0 67.5 Comparative Example 1 4.5 4.0 3.7 34.1 Comparative Example 2 4.9 3.8 3.2 28.4 Comparative Example 3 4.3 4.0 4.0 38.5 Comparative Example 4 4.0 4.0 4.5 42.0

From the results of Table 1, Examples 1 to 14 of the organic light emitting device manufactured by using the compound of the present invention than the organic light emitting device manufactured in Comparative Examples 1 to 4 have a lower driving voltage, excellent current efficiency and quantum efficiency, It can be seen that the life characteristics are also excellent.

101: substrate
201: anode
301: hole injection layer
401: hole transport layer
501: light emitting layer
601: electron injection and transport layer
701: cathode

Claims (15)

Compound represented by the following formula (1):
[Formula 1]

In Chemical Formula 1,
Ar1 and Ar2 are the same as or different from each other, and each independently represent a substituted or unsubstituted aryl group,
R1 to R4 are the same as or different from each other, and each independently hydrogen; heavy hydrogen; Halogen group; Nitrile group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted aryl group; Or a substituted or unsubstituted heterocyclic group,
r1 to r3 are each 1 to 3,
r4 is 1 to 4,
When r1 to r4 are each 2 or more, two or more R1 to R4 are the same as or different from each other,
X3 is

or

Is,
X1 and X2 are the same as or different from each other, and each independently

;

; or

Is,

Means each connecting portion,
L 4 is a substituted or unsubstituted alkylene group,
L5 is a direct bond; Or a substituted or unsubstituted arylene group,
R5 and R6 are the same as or different from each other, and each independently a substituted or unsubstituted alkyl group,
a1 and a2 are each 0 or 1
when a2 is 0, L2 is a substituted or unsubstituted aryl group,
when a2 is 1, L2 is a direct bond; Or a substituted or unsubstituted arylene group,
L 1 is a substituted or unsubstituted arylene group; Or a substituted or unsubstituted heteroarylene group,
m is 1 or 2, when m is 2, L1 is the same as or different from each other,
L3 is a direct bond; Or a substituted or unsubstituted alkylene group,
0 ≦ a1 + a2 ≦ 2. The compound of claim 1, wherein Formula 1 is represented by Formula 2 below:
[Formula 2]

In Chemical Formula 2,
The definitions for L1 to L3, Ar1, Ar2, R1 to R4, r1 to r4, X1 to X3, m, a1 and a2 are the same as defined in Chemical Formula 1. The method according to claim 1, wherein L1 is a substituted or unsubstituted phenylene group; A substituted or unsubstituted divalent fluorene group; Or a substituted or unsubstituted divalent dibenzothiophene group. The compound of claim 1, wherein Ar1 and Ar2 are the same as or different from each other, and are each independently a substituted or unsubstituted phenyl group, or a substituted or unsubstituted biphenyl group. The compound of claim 1, wherein the compound represented by Chemical Formula 1 is any one selected from the following compounds:

Coating composition comprising a compound according to any one of claims 1 to 5. A first electrode;
A second electrode provided to face the first electrode; And
At least one organic material layer provided between the first electrode and the second electrode,
At least one layer of the organic material layer is an organic light emitting device comprising the coating composition of claim 6 or a cured product thereof. The organic light emitting device of claim 7, wherein the cured product of the coating composition is in a state where the coating composition is cured by heat treatment or light treatment. The organic light emitting device of claim 7, wherein the organic material layer including the coating composition or the cured product thereof is a hole transport layer, a hole injection layer, or a layer for simultaneously transporting holes and injecting holes. The organic light emitting device of claim 7, wherein the organic material layer including the coating composition or a cured product thereof is a light emitting layer. The method according to claim 7, wherein the coating composition is an anionic group represented by the formula (11); And an ionic compound comprising a cationic group represented by Formula 12:
[Formula 11]

In Chemical Formula 11,
At least one of R101 to R120 is F; Cyano group; Or a substituted or unsubstituted fluoroalkyl group,
At least one of the remaining R101 to R120 is a curing machine,
The remaining R101 to R120 are the same as or different from each other, and each independently hydrogen; heavy hydrogen; Nitro group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted alkenyl group; Substituted or unsubstituted amine group; Substituted or unsubstituted aryl group; Or a substituted or unsubstituted heterocyclic group,
[Formula 12]

In Chemical Formula 12,
R121 to R130 are the same as or different from each other, and each independently hydrogen; heavy hydrogen; Nitro group; Halogen group; Substituted or unsubstituted alkyl group; A substituted or unsubstituted cycloalkyl group; Substituted or unsubstituted alkenyl group; Substituted or unsubstituted aryl group; Or a substituted or unsubstituted heteroring group, or a curing group. The organic light emitting device of claim 11, wherein at least one of R103, R108, R113, and R118 is a curing group. The organic light emitting device of claim 11, wherein the curing group is any one selected from the following structures:

In the above structure,
L11 is a direct bond; -O-; -S-; Substituted or unsubstituted alkylene group; Substituted or unsubstituted arylene group; Or a substituted or unsubstituted heteroarylene group,
k is 1 or 2,
When k is 2, L11 is the same as or different from each other,
R131 is a substituted or unsubstituted alkyl group,

Means a site to which each is connected. The organic light emitting device of claim 11, wherein the anionic group represented by Formula 11 is any one selected from the following structures:

The organic light emitting device of claim 11, wherein the cation group represented by Chemical Formula 12 is any one selected from the following structures:

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